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    Taylor calcium hardness test with spa vs pool strange results

    What's your sanitizer level (in your case bromine)?
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    New Pool Owner with some interesting levels

    This is what I'd recommend: 1. Raise chlorine to 5% (minimum) your CYA to get into the safe sanitizer zone, so for CYA=200, get to FC=10ppm. Use bleach for immediate effect. 2. Sadly, as suggested already, you are gonna need to partially drain to get your CYA<=60. I personally run CYA=30-40...
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    Calcium at 1,200 ppm

    Need a full set of parameters to effectively help you, but here is my suggestion. First order is to get your TA to 60 (do likely several rounds of acid to reach pH=7.0, let pH rise to 7.8, repeat acid dose, do until TA=60), then maintain 7.8 max. so you are not scaling. Your pH ceiling will be...